CN117779030A - Silicon crystal tank liquid and environment-friendly metal surface treatment process - Google Patents
Silicon crystal tank liquid and environment-friendly metal surface treatment process Download PDFInfo
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- CN117779030A CN117779030A CN202410037535.XA CN202410037535A CN117779030A CN 117779030 A CN117779030 A CN 117779030A CN 202410037535 A CN202410037535 A CN 202410037535A CN 117779030 A CN117779030 A CN 117779030A
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- metal surface
- surface treatment
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- silicon crystal
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 126
- 239000002184 metal Substances 0.000 title claims abstract description 126
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 114
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 114
- 239000010703 silicon Substances 0.000 title claims abstract description 114
- 239000007788 liquid Substances 0.000 title claims abstract description 81
- 239000013078 crystal Substances 0.000 title claims abstract description 74
- 238000004381 surface treatment Methods 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 52
- 230000008569 process Effects 0.000 title claims abstract description 45
- 239000002270 dispersing agent Substances 0.000 claims abstract description 37
- 239000002736 nonionic surfactant Substances 0.000 claims abstract description 32
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 28
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 25
- 229920001577 copolymer Polymers 0.000 claims abstract description 24
- 239000002994 raw material Substances 0.000 claims abstract description 21
- 238000005507 spraying Methods 0.000 claims abstract description 18
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000001035 drying Methods 0.000 claims abstract description 16
- 239000003112 inhibitor Substances 0.000 claims abstract description 16
- 238000002791 soaking Methods 0.000 claims abstract description 11
- 238000005096 rolling process Methods 0.000 claims abstract description 8
- 230000007613 environmental effect Effects 0.000 claims abstract description 7
- 238000007865 diluting Methods 0.000 claims abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 30
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 26
- 239000000839 emulsion Substances 0.000 claims description 26
- 229910052782 aluminium Inorganic materials 0.000 claims description 25
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 25
- -1 sodium carboxylate Chemical class 0.000 claims description 23
- 229910052742 iron Inorganic materials 0.000 claims description 15
- 239000010935 stainless steel Substances 0.000 claims description 15
- 229910001220 stainless steel Inorganic materials 0.000 claims description 15
- 239000004952 Polyamide Substances 0.000 claims description 14
- 229920002647 polyamide Polymers 0.000 claims description 14
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 12
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 12
- 229910052802 copper Inorganic materials 0.000 claims description 12
- 239000010949 copper Substances 0.000 claims description 12
- DAKWPKUUDNSNPN-UHFFFAOYSA-N Trimethylolpropane triacrylate Chemical compound C=CC(=O)OCC(CC)(COC(=O)C=C)COC(=O)C=C DAKWPKUUDNSNPN-UHFFFAOYSA-N 0.000 claims description 11
- WWOJHRGOXHGXEX-UHFFFAOYSA-N n-[[acetyl(methyl)amino]-ethenyl-methylsilyl]-n-methylacetamide Chemical compound CC(=O)N(C)[Si](C)(C=C)N(C)C(C)=O WWOJHRGOXHGXEX-UHFFFAOYSA-N 0.000 claims description 11
- DBBBNHXGUKHOBJ-UHFFFAOYSA-N CCO[SiH](C)N(C)C Chemical compound CCO[SiH](C)N(C)C DBBBNHXGUKHOBJ-UHFFFAOYSA-N 0.000 claims description 9
- 239000011734 sodium Substances 0.000 claims description 8
- 229910052708 sodium Inorganic materials 0.000 claims description 8
- 239000004094 surface-active agent Substances 0.000 claims description 8
- HBELKEREKFGFNM-UHFFFAOYSA-N n'-[[4-(2-trimethoxysilylethyl)phenyl]methyl]ethane-1,2-diamine Chemical compound CO[Si](OC)(OC)CCC1=CC=C(CNCCN)C=C1 HBELKEREKFGFNM-UHFFFAOYSA-N 0.000 claims description 7
- KUDUQBURMYMBIJ-UHFFFAOYSA-N 2-prop-2-enoyloxyethyl prop-2-enoate Chemical compound C=CC(=O)OCCOC(=O)C=C KUDUQBURMYMBIJ-UHFFFAOYSA-N 0.000 claims description 6
- AHKKZIUZTWZKDR-UHFFFAOYSA-N n-[bis(dimethylamino)-methylsilyl]-n-methylmethanamine Chemical compound CN(C)[Si](C)(N(C)C)N(C)C AHKKZIUZTWZKDR-UHFFFAOYSA-N 0.000 claims description 6
- 159000000000 sodium salts Chemical class 0.000 claims description 6
- CMGDVUCDZOBDNL-UHFFFAOYSA-N 4-methyl-2h-benzotriazole Chemical compound CC1=CC=CC2=NNN=C12 CMGDVUCDZOBDNL-UHFFFAOYSA-N 0.000 claims description 5
- 239000012964 benzotriazole Substances 0.000 claims description 5
- 229920005646 polycarboxylate Polymers 0.000 claims description 5
- YHEKBXQMXRLCCX-UHFFFAOYSA-N 2h-benzotriazol-4-ylmethanol Chemical compound OCC1=CC=CC2=C1N=NN2 YHEKBXQMXRLCCX-UHFFFAOYSA-N 0.000 claims description 4
- NGKNMHFWZMHABQ-UHFFFAOYSA-N 4-chloro-2h-benzotriazole Chemical compound ClC1=CC=CC2=NNN=C12 NGKNMHFWZMHABQ-UHFFFAOYSA-N 0.000 claims description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 4
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 4
- 150000001412 amines Chemical class 0.000 claims description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 4
- 229920000570 polyether Polymers 0.000 claims description 4
- 229920005862 polyol Polymers 0.000 claims description 4
- 150000003077 polyols Chemical class 0.000 claims description 4
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 4
- ZDQNWDNMNKSMHI-UHFFFAOYSA-N 1-[2-(2-prop-2-enoyloxypropoxy)propoxy]propan-2-yl prop-2-enoate Chemical compound C=CC(=O)OC(C)COC(C)COCC(C)OC(=O)C=C ZDQNWDNMNKSMHI-UHFFFAOYSA-N 0.000 claims description 3
- RYCHOYFETYRVLW-UHFFFAOYSA-N 3,3-dihydroxy-2-methylprop-2-enoic acid Chemical compound OC(O)=C(C)C(O)=O RYCHOYFETYRVLW-UHFFFAOYSA-N 0.000 claims description 3
- JHWGFJBTMHEZME-UHFFFAOYSA-N 4-prop-2-enoyloxybutyl prop-2-enoate Chemical compound C=CC(=O)OCCCCOC(=O)C=C JHWGFJBTMHEZME-UHFFFAOYSA-N 0.000 claims description 3
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 3
- YQGOWXYZDLJBFL-UHFFFAOYSA-N dimethoxysilane Chemical compound CO[SiH2]OC YQGOWXYZDLJBFL-UHFFFAOYSA-N 0.000 claims description 3
- 238000007761 roller coating Methods 0.000 claims description 3
- WALDZEDPTHNIAM-UHFFFAOYSA-N prop-2-enoic acid 2,2,3-trimethylbutane Chemical compound C(C=C)(=O)O.C(C=C)(=O)O.C(C=C)(=O)O.C(C=C)(=O)O.CC(C(C)(C)C)C WALDZEDPTHNIAM-UHFFFAOYSA-N 0.000 claims 1
- 238000000576 coating method Methods 0.000 abstract description 32
- 239000011248 coating agent Substances 0.000 abstract description 31
- 238000005260 corrosion Methods 0.000 abstract description 16
- 230000007797 corrosion Effects 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000007769 metal material Substances 0.000 abstract description 7
- 239000000853 adhesive Substances 0.000 abstract description 4
- 230000001070 adhesive effect Effects 0.000 abstract description 4
- 239000000383 hazardous chemical Substances 0.000 abstract 1
- 238000003756 stirring Methods 0.000 description 18
- 239000000126 substance Substances 0.000 description 13
- 239000000243 solution Substances 0.000 description 11
- 239000007921 spray Substances 0.000 description 11
- 239000013504 Triton X-100 Substances 0.000 description 10
- 229920004890 Triton X-100 Polymers 0.000 description 10
- 239000013556 antirust agent Substances 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 9
- 238000002360 preparation method Methods 0.000 description 9
- 150000003839 salts Chemical class 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 150000001875 compounds Chemical group 0.000 description 5
- 239000003973 paint Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000010960 cold rolled steel Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 229920000056 polyoxyethylene ether Polymers 0.000 description 4
- 229940051841 polyoxyethylene ether Drugs 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 125000000524 functional group Chemical group 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- IAKGBURUJDUUNN-UHFFFAOYSA-N 2,2-bis(hydroxymethyl)-3-methylbutane-1,4-diol prop-2-enoic acid Chemical compound OC(=O)C=C.OC(=O)C=C.OC(=O)C=C.OC(=O)C=C.OCC(C)C(CO)(CO)CO IAKGBURUJDUUNN-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 150000003973 alkyl amines Chemical class 0.000 description 2
- 239000012267 brine Substances 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 150000002191 fatty alcohols Chemical class 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- PYIDGJJWBIBVIA-UYTYNIKBSA-N lauryl glucoside Chemical compound CCCCCCCCCCCCO[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1O PYIDGJJWBIBVIA-UYTYNIKBSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- ONJQDTZCDSESIW-UHFFFAOYSA-N polidocanol Chemical compound CCCCCCCCCCCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO ONJQDTZCDSESIW-UHFFFAOYSA-N 0.000 description 2
- 229920000136 polysorbate Polymers 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- SVSGVNLFCVYWRB-UHFFFAOYSA-N 1-[methoxy-methyl-(2-methylpropyl)silyl]oxypropane-1,1-diamine Chemical compound CCC(N)(N)O[Si](C)(OC)CC(C)C SVSGVNLFCVYWRB-UHFFFAOYSA-N 0.000 description 1
- 241001163841 Albugo ipomoeae-panduratae Species 0.000 description 1
- FXENPAIIAXGGBX-UHFFFAOYSA-N COC(=O)C1=CC=C(C#C[Si](C)(C)C)C(N)=C1 Chemical compound COC(=O)C1=CC=C(C#C[Si](C)(C)C)C(N)=C1 FXENPAIIAXGGBX-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000004931 aggregating effect Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001565 benzotriazoles Chemical class 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- PKTOVQRKCNPVKY-UHFFFAOYSA-N dimethoxy(methyl)silicon Chemical compound CO[Si](C)OC PKTOVQRKCNPVKY-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002120 nanofilm Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 150000004756 silanes Chemical class 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Chemical Treatment Of Metals (AREA)
Abstract
The invention relates to the technical field of metal surface treatment, and particularly discloses silicon crystal tank liquor and an environment-friendly metal surface treatment process. The silicon crystal groove liquid comprises the following raw materials in percentage by mass: 3-7% of a cross-linking agent; 2-10% of SiN copolymer; 5-15% of acrylic resin; 2-5% of rust inhibitor; 10-30% of nonionic surfactant; 5-8% of dispersing agent; the balance being water. The environment-friendly metal surface treatment process comprises a silicon crystal treatment step and a drying step, wherein the silicon crystal treatment is as follows: diluting the silicon crystal groove liquid by 10-30 times with water to form silicon-containing metal surface treatment liquid; and spraying, soaking or rolling the metal workpiece by the silicon-containing metal surface treatment liquid. The invention mainly aims at improving the corrosion resistance of the metal surface. The process improves production efficiency and reduces environmental impact by simplifying processing steps and reducing the use of environmentally hazardous chemicals. Is suitable for various metal materials, and can effectively enhance the adhesive force and durability of the coating, thereby providing good anti-corrosion protection.
Description
Technical Field
The invention relates to the technical field of metal surface treatment, in particular to a silicon crystal tank liquor and an environment-friendly metal surface treatment process.
Background
In the traditional metal surface treatment field, the problems of complex process and heavy environmental burden are recognized in the industry. The traditional process needs to shuttle to nine stages of degreasing, water washing, surface adjustment, phosphating and the like, and each stage needs to be washed by water before drying. This repeated and lengthy process not only consumes a lot of water resources, but also places a great pressure on the environment due to the use of chemicals containing heavy metals such as phosphorus, nickel, chromium, etc. The problems of treatment and discharge of these heavy metal treatment agents have become a major challenge to be solved.
In addition, the chemicals used in the existing process, such as strong acid, strong alkali, hydrofluoric acid and the like, are used in a large amount, so that the danger is extremely high, the health of operators is seriously threatened, and the safety risk in the production process is greatly increased. The safety problem of the process is related to the direct health of operators, and the stability and reliability of the whole production link are affected. Meanwhile, the limitations of the prior art in processing different metal materials, such as aluminum, iron, stainless steel, copper and other materials need to be processed respectively, so that the production cost and complexity are greatly improved, and the production efficiency is slowed down.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention provides a silicon crystal tank solution, which comprises the following raw materials by mass:
3-7% of a cross-linking agent;
2-10% of SiN copolymer;
5-15% of acrylic resin;
2-5% of rust inhibitor;
10-30% of nonionic surfactant;
5-8% of dispersing agent;
the balance being water.
Preferably, the cross-linking agent is one or more of butanediol diacrylate, trimethylolpropane triacrylate, methyl methacrylate, tripropylene glycol diacrylate, triglycidyl triacrylate, tetramethylolpropane tetraacrylate, ethylene glycol diacrylate and dihydroxymethacrylate.
Preferably, the SiN copolymer is one or more of methyl vinyl bis (N-methylacetamido) silane, (aminoethylaminomethyl) phenethyl trimethoxysilane, aminoethylaminoiobutylmethyl dimethoxy silane, methyl 3-amino-4- [ (trimethylsilyl) ethynyl ] benzoate, (dimethylamino) methylethoxy silane, and tris (dimethylamino) methylsilane.
Preferably, the acrylic resin isCA-600L acrylic emulsion, < >>CA7160A acrylic emulsion, < >>3076 acrylic emulsion, < >>7734 acrylic emulsion,CA7160RC acrylic emulsion and +.>One or more of CR-726 acrylic emulsion.
Preferably, the rust inhibitor is one or more of sodium carboxylate, sodium sulfonate, benzotriazole, methylbenzotriazole, hydroxymethylbenzotriazole, dithiobenzotriazole and chlorobenzotriazole.
Preferably, the nonionic surfactant is a polyoxyethylene type, a polyol type, an alkanolamide type, a polyether type, an amine oxide type surfactant.
Preferably, the polyoxyethylene nonionic surfactant is selected from long-chain fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether, fatty acid polyoxyethylene ester, polyoxyethylene alkylamine and polyoxyethylene alkylamide.
Preferably, the nonionic surfactant is one or more of tween surfactant, dodecyl glucoside, triton X-100 and AEO-9.
Preferably, the dispersant is a polycarboxylate sodium salt dispersant or a polyamide hyperdispersant.
Preferably, the dispersant is a polycarboxylate sodium salt dispersant Tersperse 2700, a polyamide hyperdispersant dispener 983, 896, 904S or 9250.
The preparation method of the silicon crystal groove liquid comprises the following steps: adding the raw materials into a reaction kettle, heating to 65-85 ℃, stirring for 1-3 hours at 200-800 rpm, and preserving heat for 12-36 hours; stirring for 1-3 hours at 200-800 rpm to obtain the silicon crystal groove liquid.
The invention also provides an environment-friendly metal surface treatment process, which adopts the silicon crystal groove liquid.
Preferably, the environment-friendly metal surface treatment process comprises a silicon crystal treatment step and a drying step, wherein the silicon crystal treatment step comprises the following steps:
(1) Diluting the silicon crystal groove liquid by 10-30 times with water to form silicon-containing metal surface treatment liquid;
(2) And spraying, soaking or rolling the metal workpiece by the silicon-containing metal surface treatment liquid.
Preferably, the metal workpiece is an aluminum workpiece, an iron workpiece, stainless steel, a galvanized workpiece or a copper workpiece.
Preferably, the spraying step is as follows: and spraying the silicon-containing metal surface treatment liquid on a metal workpiece for 2-5 minutes at the temperature of 10-40 ℃.
Preferably, the soaking step is as follows: immersing the metal workpiece in the silicon-containing metal surface treatment liquid for 10-15 minutes at the temperature of 10-40 ℃.
Preferably, the roll coating step is: and rolling the metal workpiece at the temperature of 10-40 ℃ for 1-2 seconds.
Preferably, the drying step is as follows: and baking the metal workpiece for 1-10 minutes at 80-350 ℃.
The silicon crystal groove liquid can treat aluminum workpieces, iron workpieces, stainless steel, galvanized workpieces and copper workpieces. The aluminum workpiece, the iron workpiece, the stainless steel, the galvanized workpiece and the copper workpiece treated by the environment-friendly metal surface treatment process can be directly sprayed with powder or paint. Excellent paint film adhesion, as well as excellent corrosion resistance, can be obtained.
The silicon crystal tank liquor and the environment-friendly metal surface treatment process have the advantages that:
(1) Simplifying the process flow: the traditional metal surface treatment process is simplified by reducing the treatment steps, and the production efficiency is improved.
(2) Environmental protection performance: reduces the use of chemical substances harmful to the environment, reduces the discharge of waste water, and meets the environmental protection requirement.
(3) The applicability is wide: is suitable for various metal materials (such as aluminum, iron, stainless steel and the like) and provides a flexible treatment scheme.
(4) Improving the coating performance: the adhesive force and the durability of the coating are enhanced, excellent anti-corrosion performance is provided, and the metal workpiece is protected.
(5) Economic benefit: the energy consumption and the cost are reduced, the product quality is improved, and the economic benefit is better.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an environment-friendly metal surface treatment process using spraying according to the present invention.
FIG. 2 is a schematic diagram of an environment-friendly metal surface treatment process using roll coating in accordance with the present invention.
FIG. 3 is a graph comparing salt spray tests conducted for 400 hours using aluminum plates in accordance with the present invention.
FIG. 4 is a graph comparing salt spray tests conducted for 400 hours using galvanized plates according to the invention.
FIG. 5 is a graph showing a comparative example of salt spray test for 400 hours using a cold rolled steel sheet according to the present invention.
Fig. 6 is a comparative view of the pretreatment process of silicon crystals on a decorative aluminum sheet strip.
Fig. 7 is a comparison chart of the pretreatment process of silicon crystals on an aluminum can lid.
FIG. 8 is a diagram showing the overall comparison of the present invention and the conventional process.
Detailed Description
The contents of the present invention can be more easily understood by referring to the following detailed description of preferred embodiments of the present invention and examples included. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification, definitions, will control.
The silicon crystal groove liquid comprises the following raw materials in percentage by mass:
3-7% of a cross-linking agent;
2-10% of SiN copolymer;
5-15% of acrylic resin;
2-5% of rust inhibitor;
10-30% of nonionic surfactant;
5-8% of dispersing agent;
the balance being water.
The cross-linking agent is one or more of butanediol diacrylate, trimethylolpropane triacrylate, methyl methacrylate, tripropylene glycol diacrylate, triglycidyl triacrylate, tetramethylolpropane tetraacrylate, ethylene glycol diacrylate and dihydroxymethacrylate. In the invention, the cross-linking agent forms a stable cross-linked network in the system, so that the mechanical strength and the wear resistance of the system are obviously improved, and the durability of the metal workpiece is enhanced. The cross-linking agent can also promote the chemical stability of the system, so that the system can better resist the corrosion of chemical substances, and effectively protect the metal surface from corrosion. In addition, they enhance the adhesion of the coating to the metal surface, ensuring that the coating adheres strongly to the metal. This enhanced adhesion and chemical stability allows the treated metal work pieces (e.g., aluminum, iron, stainless steel, galvanized parts, copper) to be directly powder or paint sprayed, with excellent adhesion and corrosion protection properties.
The SiN copolymer is one or more of methyl vinyl bis (N-methylacetamido) silane, (aminoethylaminomethyl) phenethyl trimethoxysilane, aminoethylaminoiobutylmethyl dimethoxy silane, methyl 3-amino-4- [ (trimethylsilyl) ethynyl ] benzoate, (dimethylamino) methylethoxy silane, and tris (dimethylamino) methylsilane. In the present invention, the selection and application of various SiN copolymers is aimed at utilizing their unique chemical structure to enhance the treatment of metal surfaces. These compounds form enhanced chemical bonds and cross-linked networks through the interaction of their functional groups with the metal surface, thereby enhancing the adhesion, corrosion resistance and durability of the coating. The presence of the methyl vinyl groups and amino groups provides these compounds with active sites for chemical reaction with the metal surface, which not only enhances the compatibility of the coating with the metal substrate, but also enhances the environmental erosion resistance of the coating. In addition, the molecular structure of SiN copolymers allows them to form a dense protective layer during processing that is effective against attack by chemicals, protecting the metal surface from damage, while also providing a more uniform and aesthetic appearance. Therefore, siN copolymers play an important role in improving the quality and efficiency of metal surface treatment. Preferably, the SiN copolymer is a combination of methyl vinyl bis (N-methylacetamido) silane and (dimethylamino) methylethoxy silane.
| SiN copolymers | CAS number |
| Methyl vinyl bis (N-methylacetamido) silane | 50791-87-2 |
| (Aminoethylaminomethyl) phenethyl trimethoxysilane | 75822-22-9 |
| Amino ethyl amino isobutyl methyl dimethoxy silane | 23410-40-4 |
| 3-amino-4- [ (trimethylsilyl) ethynyl]Benzoic acid methyl ester | 1186611-25-5 |
| (dimethylamino) methylethoxy silane | 96836-74-7 |
| Tris (dimethylamino) methylsilane | 3768-57-8 |
The acrylic resin isCA-600L acrylic emulsion, < >>CA7160A acrylic emulsion, < >>3076 acrylic emulsion, < >>7734 acrylic emulsion, < >>CA7160RC acrylic emulsion and +.>One or more of CR-726 acrylic emulsion. In the present invention, the acrylic resin significantly promotes adhesion of the coating to the metal surface, which is critical to the long-term durability of the coating. The protective film formed on the metal surface by the acrylic resin can effectively resist corrosion and abrasion, and the service life of the metal material is prolonged. These resins also improve the mechanical properties of the coating, such as elasticity, hardness and abrasion resistance, making the coating more robust. In addition, the acrylic resin enhances the chemical resistance of the coating, particularly against chemical solvents and cleaners. Finally, the acrylic resin also improves the appearance of the coating, providing a smoother, uniform surface, thereby increasing the aesthetics of the product. Thus, acrylic resins play a versatile role in the metal surface treatment of the present invention.
The antirust agent is one or more of sodium carboxylate, sodium sulfonate, benzotriazole, methylbenzotriazole, hydroxy methylbenzotriazole, dithiobenzotriazole and chlorobenzotriazole. The rust inhibitor mainly serves to protect the metal surface from corrosion. The selected antirust agent comprises sodium carboxylate, sodium sulfonate, benzotriazole, methylbenzotriazole, hydroxy methylbenzotriazole, dithiobenzotriazole, chlorobenzotriazole and the like. These compounds are effective in preventing the corrosive action of moisture and oxygen on metals by forming a protective layer on the metal surface or reacting with metal ions to form stable complexes. For example, benzotriazole compounds (e.g., benzotriazole, methylbenzotriazole) block corrosive media by forming a dense molecular film. The use of the rust inhibitors ensures that the silicon crystal tank liquor can effectively treat various metal materials (such as aluminum, iron, stainless steel and the like) and provide good anti-corrosion bottom protection for the silicon crystal tank liquor before coating, thereby ensuring the adhesive force and anti-corrosion performance of the final coating.
The nonionic surfactant is polyoxyethylene type, polyol type, alkanolamide type, polyether type or amine oxide type surfactant. The polyoxyethylene nonionic surfactant is selected from long-chain fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether, fatty acid polyoxyethylene ester, polyoxyethylene alkylamine and polyoxyethylene alkylamide. The nonionic surfactant is one or more of Tween surfactant, dodecyl glucoside, triton X-100 and AEO-9. The nonionic surfactant acts to improve the wettability of the metal surface and the uniformity of the coating. These surfactants reduce the surface tension of water and other liquids, making the silicon wafer bath easier to wet the metal surface, thereby improving the uniform distribution of the coating on the metal surface. In addition, the nonionic surfactant also helps to maintain the stability of the silicon crystal bath solution and prevent component separation. Preferred nonionic surfactants include polyoxyethylene type, polyol type, alkanolamide type, polyether type, amine oxide type surfactants. When the surface active agents are used for treating the metal surface, the treatment efficiency is improved, and the quality and the performance of the coating are ensured.
The dispersing agent is a polycarboxylate sodium salt dispersing agent or a polyamide hyperdispersing agent. The dispersing agent is a polycarboxylate sodium salt dispersing agent Tersperse 2700, a polyamide hyperdispersing agent dispener 983, 896, 904S or 9250. The function of the dispersant is to improve the dispersibility and stability of other components in the liquid. The dispersing agent can effectively reduce aggregation and precipitation of components in the liquid, so that uniformity of silicon crystal tank liquid is ensured. These dispersants are particularly useful for maintaining a stable dispersion of the active ingredient in the liquid so that the silicon wafer bath provides more uniform coverage and better treatment results when treating metal surfaces. By using these dispersants, the silicon crystal baths can act more effectively on various metal surfaces, such as aluminum, iron, stainless steel, etc., to achieve excellent coating adhesion and corrosion resistance.
In the present invention, the dispersant and the nonionic surfactant are used to improve the physical properties of the liquid, but their main roles are different. Dispersing agents, such as polycarboxylic acid sodium salt dispersing agents or polyamide hyperdispersing agents, are mainly used for keeping the components in the liquid uniformly dispersed and preventing the components from aggregating or precipitating. The nonionic surfactant is mainly used for reducing the surface tension of the liquid and enhancing the wettability of the liquid on the metal surface. In some cases, the two additives may act synergistically to enhance the effect of the overall formulation, such as to improve the uniformity and stability of the coating.
The environment-friendly metal surface treatment process comprises a silicon crystal treatment step and a drying step, wherein the silicon crystal treatment step comprises the following steps:
(1) Diluting the silicon crystal groove liquid by 10-30 times with water to form silicon-containing metal surface treatment liquid; the concentrated silicon crystal groove liquid is diluted by 10-30 times, so that the silicon-containing metal surface treatment liquid has proper concentration, and the uniformity and the effectiveness of the coating are ensured.
(2) And spraying, soaking or rolling the metal workpiece by the silicon-containing metal surface treatment liquid.
The metal workpiece is an aluminum workpiece, an iron workpiece, stainless steel, a galvanized workpiece or a copper workpiece.
The spraying step is as follows: and spraying the silicon-containing metal surface treatment liquid on a metal workpiece for 2-5 minutes at the temperature of 10-40 ℃. By means of spraying, the liquid can be uniformly covered on complex or irregular surfaces, and the device is suitable for workpieces with various shapes and sizes.
The soaking step is as follows: immersing the metal workpiece in the silicon-containing metal surface treatment liquid for 10-15 minutes at the temperature of 10-40 ℃. The workpiece is completely immersed in the liquid, so that each corner can be ensured to be contacted with the treatment liquid, and the method is suitable for the workpiece needing deep treatment.
The roller coating step comprises the following steps: and rolling the metal workpiece at the temperature of 10-40 ℃ for 1-2 seconds. The liquid is uniformly smeared on the surface of the workpiece through the roller, and the device is suitable for processing the planar or large-batch workpieces.
In the environment-friendly metal surface treatment process, a silicon-containing metal surface treatment liquid is uniformly applied to a metal workpiece by using a spraying, soaking or roll coating method, so as to ensure that the metal surface of each part can be fully covered and treated. Each of these methods has its own characteristics. The choice of a particular method depends on the particular requirements, shape and size of the workpiece, and the efficiency requirements of the process flow. By properly selecting the proper method, the uniform and effective silicon crystal treatment of the surface of the metal workpiece can be ensured, and the performance and durability of the final coating are improved.
The drying step is as follows: and baking the metal workpiece for 1-10 minutes at 80-350 ℃. To promote curing and drying of the coating to enhance adhesion and durability of the coating.
The process is suitable for various metal materials, such as aluminum, iron, stainless steel, galvanized parts and copper workpieces, and aims to provide uniform and efficient surface treatment so as to improve the corrosion resistance of the metal workpieces and the adhesive force of the coating.
The metal workpieces subjected to the silicon crystal treatment can be directly subjected to powder spraying or paint spraying. The treated workpieces exhibit excellent paint film adhesion and excellent corrosion protection. The application of such surface treatment techniques provides a wide range of material flexibility and superior surface protection effects, and is critical to improving the overall performance and durability of the metal workpiece.
Compared with the traditional treatment method, the silicon crystal metal surface treatment product and the process thereof can reduce the equipment investment by 70 percent; the water consumption is reduced by more than 98 percent; realizing zero emission of wastewater; the management cost is reduced by 60 percent (matched with an oil-water separation system); the production efficiency is improved by 2-3 times; saving 70% of energy consumption. Can realize the collinear treatment of products made of various metal materials. Can provide more excellent corrosion resistance and no rust (iron) return after 7-15 days. Can solve the difficult problem that stainless steel, copper and passivation plates can not be coated.
Example 1
The silicon crystal groove liquid comprises the following raw materials in percentage by mass: 5% of a cross-linking agent; siN copolymer 8%; 10% of acrylic resin; 3% of rust inhibitor; 15% of a nonionic surfactant; 6% of a dispersing agent; the balance being water.
The cross-linking agent is trimethylolpropane triacrylate.
The SiN copolymer is methyl vinyl bis (N-methylacetamido) silane.
The acrylic resin isCR-726 acrylic emulsion.
The antirust agent is benzotriazol.
The nonionic surfactant is triton X-100.
The dispersing agent is polyamide hyperdispersant dispener 983.
The preparation method of the silicon crystal groove liquid comprises the following steps: adding the raw materials into a reaction kettle, heating to 75 ℃, stirring for 2 hours at 500 rpm, and preserving heat for 24 hours; and stirring for 2 hours at 500 rpm to obtain the silicon crystal tank liquid.
Example 2
The silicon crystal groove liquid comprises the following raw materials in percentage by mass: 5% of a cross-linking agent; siN copolymer 8%; 10% of acrylic resin; 3% of rust inhibitor; 15% of a nonionic surfactant; 6% of a dispersing agent; the balance being water.
The cross-linking agent is trimethylolpropane triacrylate.
The SiN copolymer is (aminoethylaminomethyl) phenethyl trimethoxysilane.
The acrylic resin isCR-726 acrylic emulsion.
The antirust agent is benzotriazol.
The nonionic surfactant is triton X-100.
The dispersing agent is polyamide hyperdispersant dispener 983.
The preparation method of the silicon crystal groove liquid comprises the following steps: adding the raw materials into a reaction kettle, heating to 75 ℃, stirring for 2 hours at 500 rpm, and preserving heat for 24 hours; and stirring for 2 hours at 500 rpm to obtain the silicon crystal tank liquid.
Example 3
The silicon crystal groove liquid comprises the following raw materials in percentage by mass: 5% of a cross-linking agent; siN copolymer 8%; 10% of acrylic resin; 3% of rust inhibitor; 15% of a nonionic surfactant; 6% of a dispersing agent; the balance being water.
The cross-linking agent is trimethylolpropane triacrylate.
The SiN copolymer is aminoethylaminoiobutyl methyldimethoxysilane.
The acrylic resin isCR-726 acrylic emulsion.
The antirust agent is benzotriazol.
The nonionic surfactant is triton X-100.
The dispersing agent is polyamide hyperdispersant dispener 983.
The preparation method of the silicon crystal groove liquid comprises the following steps: adding the raw materials into a reaction kettle, heating to 75 ℃, stirring for 2 hours at 500 rpm, and preserving heat for 24 hours; and stirring for 2 hours at 500 rpm to obtain the silicon crystal tank liquid.
Example 4
The silicon crystal groove liquid comprises the following raw materials in percentage by mass: 5% of a cross-linking agent; siN copolymer 8%; 10% of acrylic resin; 3% of rust inhibitor; 15% of a nonionic surfactant; 6% of a dispersing agent; the balance being water.
The cross-linking agent is trimethylolpropane triacrylate.
The SiN copolymer was methyl 3-amino-4- [ (trimethylsilyl) ethynyl ] benzoate.
The acrylic resin isCR-726 acrylic emulsion.
The antirust agent is benzotriazol.
The nonionic surfactant is triton X-100.
The dispersing agent is polyamide hyperdispersant dispener 983.
The preparation method of the silicon crystal groove liquid comprises the following steps: adding the raw materials into a reaction kettle, heating to 75 ℃, stirring for 2 hours at 500 rpm, and preserving heat for 24 hours; and stirring for 2 hours at 500 rpm to obtain the silicon crystal tank liquid.
Example 5
The silicon crystal groove liquid comprises the following raw materials in percentage by mass: 5% of a cross-linking agent; siN copolymer 8%; 10% of acrylic resin; 3% of rust inhibitor; 15% of a nonionic surfactant; 6% of a dispersing agent; the balance being water.
The cross-linking agent is trimethylolpropane triacrylate.
The SiN copolymer is (dimethylamino) methylethoxy silane.
The acrylic resin isCR-726 acrylic emulsion.
The antirust agent is benzotriazol.
The nonionic surfactant is triton X-100.
The dispersing agent is polyamide hyperdispersant dispener 983.
The preparation method of the silicon crystal groove liquid comprises the following steps: adding the raw materials into a reaction kettle, heating to 75 ℃, stirring for 2 hours at 500 rpm, and preserving heat for 24 hours; and stirring for 2 hours at 500 rpm to obtain the silicon crystal tank liquid.
Example 6
The silicon crystal groove liquid comprises the following raw materials in percentage by mass: 5% of a cross-linking agent; siN copolymer 8%; 10% of acrylic resin; 3% of rust inhibitor; 15% of a nonionic surfactant; 6% of a dispersing agent; the balance being water.
The cross-linking agent is trimethylolpropane triacrylate.
The SiN copolymer is tris (dimethylamino) methylsilane.
The acrylic resin isCR-726 acrylic emulsion.
The antirust agent is benzotriazol.
The nonionic surfactant is triton X-100.
The dispersing agent is polyamide hyperdispersant dispener 983.
The preparation method of the silicon crystal groove liquid comprises the following steps: adding the raw materials into a reaction kettle, heating to 75 ℃, stirring for 2 hours at 500 rpm, and preserving heat for 24 hours; and stirring for 2 hours at 500 rpm to obtain the silicon crystal tank liquid.
Example 7
The silicon crystal groove liquid comprises the following raw materials in percentage by mass: 5% of a cross-linking agent; methyl vinyl bis (N-methylacetamido) silane 4%; (dimethylamino) methylethoxy silane 4%; 10% of acrylic resin; 3% of rust inhibitor; 15% of a nonionic surfactant; 6% of a dispersing agent; the balance being water.
The cross-linking agent is trimethylolpropane triacrylate.
The acrylic resin isCR-726 acrylic emulsion.
The antirust agent is benzotriazol.
The nonionic surfactant is triton X-100.
The dispersing agent is polyamide hyperdispersant dispener 983.
The preparation method of the silicon crystal groove liquid comprises the following steps: adding the raw materials into a reaction kettle, heating to 75 ℃, stirring for 2 hours at 500 rpm, and preserving heat for 24 hours; and stirring for 2 hours at 500 rpm to obtain the silicon crystal tank liquid.
Example 8
The silicon crystal groove liquid comprises the following raw materials in percentage by mass: 5% of a cross-linking agent; methyl vinyl bis (N-methylacetamido) silane 4%; (aminoethylaminomethyl) phenethyl trimethoxysilane 4%; 10% of acrylic resin; 3% of rust inhibitor; 15% of a nonionic surfactant; 6% of a dispersing agent; the balance being water.
The cross-linking agent is trimethylolpropane triacrylate.
The acrylic resin isCR-726 acrylic emulsion.
The antirust agent is benzotriazol.
The nonionic surfactant is triton X-100.
The dispersing agent is polyamide hyperdispersant dispener 983.
The preparation method of the silicon crystal groove liquid comprises the following steps: adding the raw materials into a reaction kettle, heating to 75 ℃, stirring for 2 hours at 500 rpm, and preserving heat for 24 hours; and stirring for 2 hours at 500 rpm to obtain the silicon crystal tank liquid.
Application example 1:
the environment-friendly metal surface treatment process comprises a silicon crystal treatment step and a drying step, wherein the silicon crystal treatment step comprises the following steps:
(1) The silicon wafer bath solution described in example 1 was diluted 20 times with water to form a silicon-containing metal surface treatment solution.
(2) And spraying the silicon-containing metal surface treatment liquid on the metal workpiece.
The spraying step is as follows: the silicon-containing metal surface treatment liquid is sprayed on a metal workpiece for 4 minutes at the temperature of 30 ℃.
The drying step is as follows: the metal work piece was baked at 150 ℃ for 5 minutes.
The metal workpiece is an aluminum workpiece, an iron workpiece, stainless steel, a galvanized workpiece or a copper workpiece.
FIG. 1 is a schematic diagram of an environment-friendly metal surface treatment process using spraying according to the present invention.
Application example 2:
the environment-friendly metal surface treatment process comprises a silicon crystal treatment step and a drying step, wherein the silicon crystal treatment step comprises the following steps:
(1) The silicon wafer bath solution described in example 1 was diluted 20 times with water to form a silicon-containing metal surface treatment solution.
(2) And immersing the metal workpiece in the silicon-containing metal surface treatment liquid.
The soaking step is as follows: the metal workpiece is soaked in the silicon-containing metal surface treatment liquid for 12 minutes at the temperature of 30 ℃.
The drying step is as follows: the metal work piece was baked at 150 ℃ for 5 minutes.
The metal workpiece is an aluminum workpiece, an iron workpiece, stainless steel, a galvanized workpiece or a copper workpiece.
Application example 3:
the environment-friendly metal surface treatment process comprises a silicon crystal treatment step and a drying step, wherein the silicon crystal treatment step comprises the following steps:
(1) The silicon wafer bath solution described in example 1 was diluted 20 times with water to form a silicon-containing metal surface treatment solution.
(2) And rolling the metal workpiece by the silicon-containing metal surface treatment liquid.
The roller coating step comprises the following steps: the silicon-containing metal surface treatment liquid is rolled on a metal workpiece at the temperature of 30 ℃ for 2 seconds.
The drying step is as follows: the metal work piece was baked at 150 ℃ for 5 minutes.
The metal workpiece is an aluminum workpiece, an iron workpiece, stainless steel, a galvanized workpiece or a copper workpiece.
FIG. 2 is a schematic diagram of an environment-friendly metal surface treatment process using roll coating in accordance with the present invention.
Test example 1
The silicon crystal groove liquid is diluted by 20 times by water to form silicon-containing metal surface treatment liquid. And (3) completely soaking the clean galvanized flat workpiece in the silicon-containing metal surface treatment liquid which is 10 times of the clean galvanized flat workpiece in weight at 30 ℃ for 10 minutes, taking out, and baking at 150 ℃ for 5 minutes to obtain the workpiece to be measured.
Reference is made to JIS Z2371:2000 prescribed salt spray test 100g/L salt water was used as a corrosive medium at 40℃and the test piece was subjected to a spray test to observe the occurrence of white rust.
Blank examples spray test was performed directly on clean galvanized flat workpieces.
In the present invention, methylvinylbis (N-methylacetamido) silane and (dimethylamino) methylethoxy silane exhibit superior metal surface treatment effects over other silane compounds, possibly in relation to their unique chemical structures. The reactive functional groups contained by both compounds are capable of forming stable covalent bonds with the metal surface, providing significant adhesion. The introduction of the methyl vinyl group may promote the formation of additional cross-linking sites, which may facilitate the formation of a more stable and durable network structure during the curing process. At the same time, the polarity of the methyl vinyl and N-methyl acetamido groups is matched with the polarity of the metal surface, so that the compatibility of molecules and the surface is enhanced, and the hydrophobic part of the molecules and the surface is beneficial to improving the environmental stability of the coating. In addition, the relatively small molecular size and advantageous spatial arrangement enable these molecules to penetrate deeper into the micro-pores of the metal surface, thereby providing more comprehensive protection. These characteristics work together to form a dense, uniform and durable protective coating that significantly optimizes the overall performance of the metal surface.
Example 7 shows that methylvinylbis (N-methylacetamido) silane and (dimethylamino) methylethoxy silane have a synergistic effect, possibly in relation to their unique chemical structure. The reactive functional groups contained by both compounds are capable of forming stable covalent bonds with the metal surface, providing significant adhesion. The introduction of the methyl vinyl group may promote the formation of additional cross-linking sites, which may facilitate the formation of a more stable and durable network structure during the curing process. At the same time, the relatively small size and advantageous spatial arrangement of these molecules enables them to penetrate deeper into the micro-pores of the metal surface, thereby providing more comprehensive protection.
Test example 2
The silicon wafer bath solution of example 1 was diluted 20 times with water to form a silicon-containing metal surface treatment solution. And (3) completely soaking the clean aluminum plate/galvanized plate/cold-rolled steel plate in the silicon-containing metal surface treatment liquid which is 10 times of the clean aluminum plate/galvanized plate/cold-rolled steel plate in weight at 30 ℃ for 10 minutes, taking out, and baking at 150 ℃ for 5 minutes to obtain the workpiece to be tested.
Reference is made to JIS Z2371:2000 prescribed brine spray test the test pieces were spray tested at 35 c for 400 hours using 50g/L brine as the corrosive medium. The specific result is shown in the comparison of figures 3-5.
FIG. 3 is a graph comparing salt spray tests conducted for 400 hours using aluminum plates in accordance with the present invention.
FIG. 4 is a graph comparing salt spray tests conducted for 400 hours using galvanized plates according to the invention.
FIG. 5 is a graph showing a comparative example of salt spray test for 400 hours using a cold rolled steel sheet according to the present invention.
Fig. 6 is a comparative view of the pretreatment process of silicon crystals on a decorative aluminum sheet strip. Obviously, in the pretreatment process of the decorative aluminum plate strip, the treatment time is greatly saved compared with the traditional process.
Fig. 7 is a comparison chart of the pretreatment process of silicon crystals on an aluminum can lid. Obviously, in the pretreatment process of the aluminum can cover, the treatment time is greatly saved compared with the traditional process. Silicon crystal for aluminum can cover coating at 121℃ @, and method for preparing same
Steaming under high pressure for 30 min; no blushing; no feather film; no foaming; the sulfur resistance and acid resistance test performance are excellent.
FIG. 8 is a diagram showing the overall comparison of the present invention and the conventional process. Obviously, the invention saves cost greatly compared with the traditional process.
The foregoing is merely illustrative of specific embodiments of the present invention, and the scope of the invention is not limited thereto, but any changes or substitutions that do not undergo the inventive effort should be construed as falling within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.
Claims (10)
1. The silicon crystal groove liquid is characterized by comprising the following raw materials in percentage by mass:
3-7% of a cross-linking agent;
2-10% of SiN copolymer;
5-15% of acrylic resin;
2-5% of rust inhibitor;
10-30% of nonionic surfactant;
5-8% of dispersing agent;
the balance being water.
2. The silicon crystal tank liquid according to claim 1, wherein the cross-linking agent is one or more of butanediol diacrylate, trimethylolpropane triacrylate, methyl methacrylate, tripropylene glycol diacrylate, triglycidyl triacrylate, tetramethyl propane tetraacrylate, ethylene glycol diacrylate and dihydroxymethacrylate.
3. The silicon wafer bath according to claim 1, wherein the SiN copolymer is one or more of methyl vinyl bis (N-methylacetamido) silane, (aminoethylaminomethyl) phenethyl trimethoxysilane, aminoethylaminoiobutylmethyl dimethoxy silane, methyl 3-amino-4- [ (trimethylsilyl) ethynyl ] benzoate, (dimethylamino) methylethoxy silane, and tris (dimethylamino) methylsilane.
4. The silicon wafer bath according to claim 1, wherein the acrylic resin isCA-600L acrylic emulsion, < >>CA7160A acrylic emulsion, < >>3076 acrylic emulsion,7734 acrylic emulsion, < >>CA7160RC acrylic emulsion and +.>One or more of CR-726 acrylic emulsion.
5. The silicon crystal tank liquid according to claim 1, wherein the rust inhibitor is one or more of sodium carboxylate, sodium sulfonate, benzotriazole, methylbenzotriazole, hydroxymethylbenzotriazole, dithiobenzotriazole and chlorobenzotriazole.
6. The silicon wafer bath according to claim 1, wherein the nonionic surfactant is a polyoxyethylene type, a polyol type, an alkanolamide type, a polyether type, an amine oxide type surfactant.
7. The silicon wafer bath according to claim 1, wherein the dispersant is a polycarboxylate sodium salt dispersant Tersperse 2700, a polyamide hyperdispersant dispersor 983, 896, 904S or 9250.
8. An environment-friendly metal surface treatment process which is characterized by adopting the silicon crystal groove liquid according to any one of claims 1-7.
9. The environment-friendly metal surface treatment process according to claim 8, comprising a silicon crystal treatment step and a drying step, wherein the silicon crystal treatment step is:
(1) Diluting the silicon crystal groove liquid by 10-30 times with water to form silicon-containing metal surface treatment liquid;
(2) And spraying, soaking or rolling the metal workpiece by the silicon-containing metal surface treatment liquid.
10. The environmental protection metal surface treatment process according to claim 9, comprising a silicon crystal treatment step and a drying step, characterized in that:
the metal workpiece is an aluminum workpiece, an iron workpiece, stainless steel, a galvanized workpiece or a copper workpiece;
the spraying step is as follows: spraying the silicon-containing metal surface treatment liquid on a metal workpiece for 2-5 minutes at the temperature of 10-40 ℃;
the soaking step is as follows: immersing a metal workpiece in the silicon-containing metal surface treatment liquid for 10-15 minutes at the temperature of 10-40 ℃;
the roller coating step comprises the following steps: rolling the metal workpiece at 10-40 ℃ for 1-2 seconds by using the silicon-containing metal surface treatment liquid;
the drying step is as follows: and baking the metal workpiece for 1-10 minutes at 80-350 ℃.
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| WO2020026743A1 (en) * | 2018-08-02 | 2020-02-06 | 関西ペイント株式会社 | Water-based coating composition |
| CN110747456A (en) * | 2019-12-02 | 2020-02-04 | 广州市杰裕联环保技术有限公司 | Alkaline washing-free composite silane and application thereof |
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